The Sibyl System of Trabia Mon is a gargantuan, cultured nation, ruled by Cumaean Sibyl with an iron fist, and notable for its museums and concert halls, parental licensing program, and enslaved workforce. The hard-nosed, hard-working, cynical, humorless, devout population of 10.823 billion Holy Trabians are ruled by a mostly-benevolent dictator, who grants the populace the freedom to live their own lives but watches carefully for anyone to slip up.

The large, corrupt government juggles the competing demands of Defense, Education, and Law & Order. It meets to discuss matters of state in the capital city of The Panopticon. The average income tax rate is 94.4%.

The frighteningly efficient Trabia Monian economy, worth a remarkable 2,036 trillion woolongs a year, is led by the Book Publishing industry, with major contributions from Tourism, Information Technology, and Trout Farming. Average income is an impressive 188,141 woolongs, but there is a significant disparity between incomes, with the richest 10% of citizens earning 665,961 per year while the poor average 38,377, a ratio of 17.4 to 1.

Most of the military's funding goes into researching space-age weaponry, surrealist houses shaped like mushrooms and volcanoes dominate the wealthiest neighborhoods, students are wary of colorfully decorated new teachers with names like Professor Pipsqueak, and much of Trabia Mon's computer network is controlled by a rampant artificial intelligence. Crime, especially youth-related, is totally unknown, thanks to a very well-funded police force and progressive social policies in education and welfare. Trabia Mon's national animal is the chocobo, which is also the nation's favorite main course, and its national religion is Touhou.